VM hypervisor Performance Comparison

Very curious about this myself. Specifically about clouds: What kind
of overhead is there. I've heard the AWS terms of service specifically
prohibit publishing performance data. This true?

I'd love to know whether Windows (running on QEMU inside EC2) is
better or worse than Windows in a private virtualized environment, and
if so, how much. IMHO apples-to-apples comparisons (as Franz and
Khazret point out -- thanks for the links, guys) are a tremendously
difficult thing to achieve here.

In old-world performance testing, you had an equation and changed one
variable (load, for example, or RAM) and watched the others to see
what happened. But when the variables are elastic, they're precisely
designed to accommodate such changes.

One way to talk about performance would be to compare the billing for
various tasks (in machine-hours on similarly configured platforms in
the same cloud) but that doesn't facilitate cloud-to-cloud comparison.

Anyone building the equivalent of Winstone for the cloud? Call it
cloudbench? Sounds like an awesome open source project to get started.

Alistair.
www.bitcurrent.com
www.gigaom.com/author/acroll

On Jun 11, 6:55 am, Lamia Youseff <lyous...@gmail.com> wrote:
> Hi all,
> Back in 2006, I did a performance comparison study between Xen, LLNL
> CHAOS kernel and native RHEL (red hat).
>
> The results were published in several papers, here:
> Evaluating the Performance Impact of Xen on MPI and Process Execution
> for HPC Systemshttp://www.cs.ucsb.edu/~lyouseff/pdfs/SC06-VTDC-XenHPC.pdf
>
> Paravirtualization for HPC Systems,http://www.cs.ucsb.edu/~lyouseff/pdfs/ISPA06-xhpc-XenHPC.pdf
>
> I hope you find them helpful,
> -- Lamia Youseff
>
> On Jun 7, 9:04 am, "Frans Thamura" <fr...@meruvian.org> wrote:
>
> > hi all
>
> > anyone have a report or something that compare between Xen, VMWare and
> > native OS in one server
>
> > so i know the performance slowdown inside Virtualization
>
> > --
> > --
> > Frans Thamura
> > Director of Meruvian
> > Education, Consulting, Networking, Profesional Marketplace, OpenSource
> > Development and Implementation
>
> > Mobile: +62 855 7888 699
> > YM: ftham...@yahoo.com
> > Linkedin:http://www.linkedin.com/in/fthamura
>
> > Join jTechnopreneur Program @ jtechnopreneur.com

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